Method for imaging with imaging member having filled overcoat layer

Abstract

A method for forming images including a) depositing an electrostatic latent image on a charge retentive surface of a photoreceptor member having a substrate; a charge transport layer with charge transport materials; and an overcoat layer positioned on the charge transport layer, wherein the overcoat layer includes a crosslinkable alcohol-soluble polyamide; and wherein the overcoat layer further includes additives having titanium dioxide, silica, a crosslinking agent, a deletion control agent, and a charge transport molecule; and b) applying a developer material via a development component to the charge-retentive surface to develop the electrostatic latent image to form a developed image on the charge-retentive surface, wherein the developer material comprises emulsion aggregation toner, and further wherein at least one of the additives create a texturized surface on the charge retentive surface thereby reducing the contact area between the emulsion aggregation toners and the charge retentive surface enabling increased cleaning of toners.

1. A method for forming images on a photoreceptor comprising:
 a) depositing an electrostatic latent image on a surface of a photoreceptor comprising a substrate; a charge transport layer comprising charge transport materials dispersed therein; and an overcoat layer positioned on said charge transport layer, wherein said overcoat layer has an Ra of from about 0.01 to about 0.1 μm and comprises a crosslinkable alcohol-soluble polyamide in an amount of from about 20 percent to about 90 percent of total solids and having the following Formula II, 
 
       
         
           
           
               
               
           
         
          wherein R 1 , R 2  and R 3  are the same or different and are alkyl groups containing from about 1 to about 15 carbon atoms, and wherein n is a number of from about 50 to about 1,000; and wherein said overcoat layer further comprises additives comprising titanium dioxide, silica, a crosslinking agent, a deletion control agent, and a charge transport molecule present in the overcoat layer; and 
         b) applying a developer material via a development component to said photoreceptor surface to develop said electrostatic latent image to form a developed image on said photoreceptor surface, wherein said developer material comprises emulsion aggregation toner, and further wherein at least one of said additives creates a texturized surface on said photoreceptor surface, and wherein said titanium dioxide and silica reduce a contact area between said emulsion aggregation toners and said photoreceptor surface thereby enabling increased cleaning of said emulsion aggregation toners and wherein a contact angle of the outer layer is from about 85 to 91°. 
       
     
     
       2. A method in accordance with  claim 1 , wherein said crosslinking agent is selected from the group consisting of oxalic acid, trioxane, p-toluene sulfonic acid, phosphoric acid, sulfuric acid, hexamethoxymethylmelamine, and mixtures thereof. 
     
     
       3. A method in accordance with  claim 1 , wherein said deletion control agent is selected from the group consisting of tetrakis methylene (3,5-di-tert-butyl-4-hydroxy hydrocinnamate) methane, butylated hydroxytoluene, bis-[2-methyl-4-(N-2-hydroxyethyl-N-ethyl-aminophenyl)]-phenylmethane, bis(4-diethylamino-2-methylphenyl) phenylmethane, bis(diethylamino) triphenyl methane, and mixtures thereof. 
     
     
       4. A method in accordance with  claim 1 , wherein said titanium dioxide ispresent in said overcoat layer in an amount of from about 20 to about 70 percent by weight of total solids. 
     
     
       5. A method in accordance with  claim 4 , wherein said titanium dioxide ispresent in said overcoat layer in an amount of from about 30 to about 60 percent by weight of total solids. 
     
     
       6. A method in accordance with  claim 1 , wherein said overcoat layer has athickness of from about 1 to about 20 micrometers. 
     
     
       7. A method in accordance with  claim 6 , wherein said overcoat layer has a thickness of from about 3 to about 15 micrometers. 
     
     
       8. A method in accordance with  claim 1 , further comprising c) transferring said developed image from said photoreceptor surface to another member or a copy substrate via a transfer component. 
     
     
       9. A method in accordance with  claim 8 , further comprising d) fusing said developed image to a copy substrate via a fusing member.